Bearing for scale-pivots.



Patented Mar. 25, 190 2.

6. A. N. WAHLEN, BEARING FOR SCALE PIVOTS.

(Application Med Oct. 22, 1901.;

(No Model.)

INVENTOR.

limits terns ATnNT OFFICE.

GUSTAVUS A. N. IVAIILEN, OF DETROIT, MICHIGAN.

BEARING FOR SCALE-PIVOTS.

$PEGIFICATION forming part of Letters Patent N 0. 695,973, dated March25, 1902. Application filed October 22, 1901- Serial No. 79,550. (Nomodel.)

To (LZZ whom it may concern:

Be it known that I, GUSTAVUS A. N. WAH- LEN, a citizen of the UnitedStates of America, residing at Detroit, in the countyof Viayne and Stateof Michigan, have invented certain new and useful Improvements inBearings for Scale-Pivots, of which the following is a specification,reference being had therein to the accompanying drawings.

My invention relates to that class of bearings in which small blocks ofagates or other hard material are employed to support the variousknife-edge pivots used in scale construction; and my inventionparticularly refers to an improvement in the manner of securing saidblocks to their supports, with the principal object in View to enable methereby to use less expensive agates (or other equivalents) thanrequired in the present constructions and also to facilitate themounting and dismounting without the necessity of disturbing any partsthereof.

To this end my invention consists in the novel construction,arrangement, and operation of parts, all as more fully hereinafterdescribed in connection with the accompanying drawings, in which Figurel is a perspective view of a scaleloop to which my invention is applied.Fig. 2 is an enlarged vertical central cross-section thereof. Figs. 3,4, 5, 6, and 7 are detached perspective views of each of the differentparts of which the aforesaid scale-loop is composed, as indicated by theletters of reference. Fig. 8 is a cross-section, similar to Fig. 2, of aperspecti.

ble-bearing scale-loop. Fig. 9 is a kview showing my invention asapplied ii to a scaie member.

. securing the bearing-block direct showing a modification of Fig. 9.

Fig. 10 is a cross-section Fig. 11 is a vertical longitudinal sectionthrough the bearing-block detached.

My improved bearing-block consists of two complementary parts A and A,which together form a prismatic bearing-block of the usual size and formas heretofore used in the construction of scale-bearings of thischaracter. The part A forms the face portion and is an agate or hardenedsteel with the usual depression a for the reception of the knifeedgepivot, while the part A is of cheaper material, such as brass, and formsthe base portion of the block.

The part A of the bearing-block is of the same horizontal dimensions asthe part A and is provided at the opposite ends with upward projectionsor lips a, and the partA is correspondingly cut away at the under side,as at (1 so that when the part A is placed upon the part A the former isprevented from 1011- gitudinal displacement. While this object may beobtained by forming the meeting faces of the two parts with interlockingparts of any description, I prefer the construction shown in thedrawings, in which the cut-away portions a are formed by beveling offthe edges of the part A at the ends and providing the part A,correspondingly therewith, with counterpart raised lips a. The part A isfurther provided with a transverse opening or groove a in its bodysuitable to loosely admit the securing-pin, as will appear more fullyhereinafter. In Figs. 9 and 10 I have shown the manner of securing thisblockbearing into a bearing-support B of a scale member by forming orproviding a seat in said member adapted to inclose the block upon itstwo sides and bottom and forming a casingorhousingtherefor.Throughtheside walls of this housing I then bore holes in line with andcorresponding to the groove (1 in the part A of the bearing-block anddrive a pin 0 through it. This pin will prevent the longitudinaldisplacement of the bearingblock, and to prevent its verticaldisplacement 1 provide or form the housing with slightly-projectingretaining-flanges I), bearing against the edges of the bearing-block, asshown. a

In constructing a scale-loop the bearingblock is supported in asimilarly-constructed housing 0, which may be, as-usual, of sheet metalbent to form a bearing for the sides and bottom of the bearing-block,with retainingflanges c integrally formed thereon. The side walls ofthis housing are provided with openings d, corresponding to and in linewith the groove a of the bearing-block, and through these openings andgroove alocking-pin D is passed, which also forms the pivotal connectionwith the scale-loop E.

I preferably connect the pin and the loop detachably together to permitthe dismounting, and to this end I form the pin with a reduced neck e atboth ends and form the loop with round openingsf, adapted to receive thefull-sized heads of the pin and communicating with downwardly-extendingnarrow slits g, adapted to receive the reduced necks of the pin, therebylocking the parts together in the well-known manner and permitting thedismounting without distorting any of the parts. The double-bearingscale-loop shown in-Fig. 8 has two bearing-blocks secured in the ends oftwo connecting-straps F in the same manner as described in connectionwith the singlebearing scale-loop.

In considering the merits of my invention it must be considered that thecost of the bearing-blocks forms a considerable item in the cost ofscales, especially in platform-scales,

in which a number of such bearing-blocks are.

used, and as they are commonly agates the scale-maker has to buy themfrom the lapida'ry, who ordinarily produces them of the standard sizeand form, as represented by the part A of my block-bearing, (except asto the bevels ctk) but for some of the bearings-as, for instance, forscale-loops as at present constructed-this standard form is notavailable, some of them requiring either blocks of larger size ordifferent form or provided with additional grooves or pin-holes, whichnot only considerably increases the cost of the agates, as they have tobe especially cut, but also has other inconveniences, all of which isdone away with in my construction, which makes the ordinary standardagate block-bearing available for every bearing of the scale, thebeveling off of the agate-at the ends being a small matter which doesnot-necessarily require the lapidarys assistance.

As it is desirable to have the pivot-pin bear against the bearing-block,the holes in the easing should be made a little larger than thepivot-pins.

In using the word agate in the claims I mean to include in said term anyother equivalent, such as hardened-steel blocks or other hard materialfrom which such bearing-blocks might be formed, and the termblock-bearing includes all bearings of the character of the'bearings Band C as well as bearings of the character shown in Fig. 10, which is amodification of Fig. 9 in so far that instead of forming or providingthe bearing B with flanges b I place abearing 0 within the bearing B,which is an advantage in manufacturing.

Vhat I claim as my invention isp 1. The combination with a block-bearinginclosing the bearing-block in contact with the bottom and sides thereofand provided with retaining face portions, of a bearingblock seated insaid block-bearing and composed of two parts, one an agate forming onlythe face portion of the block, the other forming a complementary-baseportion of cheaper material being interposed between the bottom of thebearing and the agate to hold the agate in contact with the retainingface por tious of the bearing 2. The combination with a block-bearinginclosing the bearing-block in contact with the bottom and sides thereofand provided with retaining face portions for said bearingblock, of abearing-block composed of two parts, one forming the face thereof beingan agate and the other of cheaper material being interposed between thebottom of the bearing and the agate and forming a complementary baseadapted to hold the agate in contact with the retaining face portion ofthe bearing, and means on said base whereby the independent endwisemovement of said agate is prevented.

3. The combination with a support and.re.-. cess in said support forminga bearing for the bearing-block whereby said bearing-block is preventedfrom lateral and vertical movement in said hearing but is free toberemoved there-,

from endwise, a bearing-block seated in said bearing in contact with theinner faces thereof, said bearing-block composed of two parts, one ofagate forming the face and the other of cheaper material formingacomplementary base, means for interlocking said base with the bearing toprevent endwise displacement of said base in the bearing and means forinterlocking said base with the agate to prevent the endwisedisplacement of said agate.

4. The combination with a support and a recess in said support forming abearing for the bearing-block adapted to hold said bearing-block againstlateral and vertical movement but free to be inserted and removedtherefrom endwise, of a bearing-block seated in said bearing in contactwith the, inner faces thereof and a pin passing transversely through thesupport and through the bearin g-block, said bearingblock composed oftwo,

parts, one forming the face portion and the other a complementary baseportion through which the pin passes, the face portion being held fromindependent endwise displacement by means of projections on said baseportion.

5. The combination with a block-bearing adapted to inclose thebearing-block upon three sides and partially upon the fourthto preventthe vertical displacement thereof, the ends being openand unobstructedto permit the endwise removal and insertio "of the block, ofabearing-blockcomposegf a face portion of agate and a base portioncheaper material and adapted to hold the face portion from endwisemovement in the healing independently thereof and means for removablyholding the base. portion in the bearing against endwise displacementindependently of the face portion of the block.

6. The combination with a block-bearing adapted to inclose thebearing-block upon three sides and partially'upon the fourth side to asufficient extent to prevent vertical displacement of saidbearing-block, the ends of the bearing being open andunobstructed forthe free insertion and removal of said bearing-block, of a bearing-blockcomposed of a face portion of agate and a base portion of cheapermaterial, said parts having interlocking meeting faces to prevent theendwise removal of either part separately and means applied to the baseportion for holding it in position in the bearing against endwisemovement.

7. The combination with a block-bearing inclosing the bearing-block uponthree sides and partially upon the fourth side, of a bearing-blockcomposed of a face portion of agate of standard size and form and a baseportion of cheaper material and unitedly forming with the agate portionabearing-block adapted to be endwise inserted into said bearing and heldtherein against vertical displacement, and a locking-pin passingtransversely through the base portion of the bearing-block and throughthe inclosing sides of the bearing and removably holding thebearing-block in position in the bearing against endwise displacement,the ends of the agate being beveled and the base provided withcounterpart projections to engage therewith to prevent independentendwise movement of the agate in relation to the base.

8. In a scale-loop, the combination of a bearing-block composed of twoparts, one of agate forming the face portion and one of cheaper materialforming a complementary base portion, the agate having beveled ends andthe base portion having counterpart projections to prevent relativeendwise movement of the parts, a bearing inclosing said block upon threesides and partly upon the fourth side or face, the ends of the bearingbeing open and unobstructed to permit the insertion and removal of thebearing-block, a pivot-pin passing through said base portion and throughthe sides of the bearing and having reduced necks, and a supporting-loopdetachably engaging with the ends of the pivotpin.

9. The combination with a block-bearing and block supported in saidbearing, of a pivot-pin passing through said bearing and block, andprovided with ends projecting beyond the walls of the bearing and formedwith reduced necks, and a supporting-loop formed with apertures in theends adapted to permit the passage of the pivot-pin therethrough andwith oifsets communicating with said apertures and adapted to engagewith the necks of the pivot-pin.

10. In a scale-bearing, a bearing-block composed of two parts, one partof agate forming the face portion of the block and the other of cheapermaterial and forming a complementary base portion thereof of the samehorizontal dimensions as the face portion, the agate provided withbevels a and the base portion provided with counterpart raised lips a tointerlock therewith, substantially as and for the purpose described.

11. The combination with a block-bearing,

of a bearing-block seated in said bearingin contact with the inner facesthereof, whereby said bearing-block is held against lateral and verticalmovement in saidbearing but free to be removed endwise therefrom withoutdistorting the bearing, of a bearing-block composed of two parts oneforming the face of the block and the other forminga complementary base,said parts interlocking with each other, whereby the independent removalfrom the bearing of either the other is prevented.

12. The combination with a block-bearing, of a bearing-block-seated insaid bearingin contact with the inner faces thereof, whereby saidbearing-block is held against lateral and vertical movement insaidbearing but free to be removed therefrom endwise, of a bearing-blockcomposed of two parts, one forming the face portion thereof andthe otherforming a complementary base portion, said parts interlocking with eachother whereby the endwise removal of one without the other is prevented,and a pin passing transversely through the block-bearing and through thebase portion of the-bearing-block.

13. The combination with a block-bearing, of a bearing-block seated insaid bearing in contact with the inner faces thereof, whereby saidbearing-block is held against lateral and vertical movement in saidhearing but free to be removed therefrom endwise, of a bearing-blockcomposed of two interlocking parts, one forming the face portion oftheblock and the other forming a complementary base portion, saidportions interlocking to prevent the independent removal of eitherportion withoutthe other, a pin passing transversely through theblock-bearing and the base portion of the bearing-block and havingprojecting ends formed with reduced necks and an open-endedsupporting-loop engaging with the reduced necks and removably lockingthe pin in position in the loop.

14. The combination with a block-bearing adapted to hold thebearing-block in position against lateral and vertical movement, of abearing-block seated in said bearing in contact with the inner facesthereof, said bearing-block composed of a face portion and of acomplementary base portion interposed between said face portion and thebottom of the bearin g and adapted to interlockwith the face portion, atransverse groove in the under side of said base portion and alockingpinpassing through said groove and the sides of the bearing andadapted to removably hold the bearing-block in position in the bearing.

In testimony whereof I affix my signature in presence of two witnesses.

GUSTAVUS A. N. WAHLEN.

Witnesses: I

Or'ro F. BARTHEL, JOSEPH A. N0ELKE.

port-ion without IIO

